动态离子交换法制备氢碘酸的研究  

PREPARATIONG OF HYDROIODIC ACID WITH DYNAMIC ION EXCHANGE METHOD

作　　者：门晓刚[1,2] 祝博[1] 林倩 曹建新[1,3] 刘飞[1,2] 

机构地区：[1]贵州大学化学与化工学院,贵阳550025 [2]贵州省绿色化工与清洁能源技术重点实验室,贵阳550025 [3]贵州省矿产资源高效利用与绿色化工技术特色重点实验室,贵阳550025

出　　处：《离子交换与吸附》2013年第5期433-439,共7页Ion Exchange and Adsorption

基　　金：贵州省科技厅重大专项(No.20116023);瓮福集团产学研合作项目

摘　　要：以粗碘为原料,水合肼为还原剂,采用动态离子交换工艺制备氢碘酸。研究了过柱流速、树脂层高度、过柱次数、交换介质等因素对产品氢离子浓度和铵交换率的影响。结果表明,在过柱流速1.2mL/min、树脂层高度33cm,沸石与树脂相结合2次过柱条件下,氢离子浓度达到1.40mol/L,铵交换率达到96%。在真空度0.07MPa,蒸发温度80℃的条件下减压蒸馏成功制备出浓度47%的氢碘酸产品,产品各项指标满足行业标准HG 3-952-76的要求。Hydroiodic acid was prepared with crude iodine as raw materials and hydrazine hydrate as reductant by dynamic ion exchange method. The effects of flow rate through column, resin layer height, times through colurnn, exchange media and other factors on concentration of hydrogen ion and exchange efficiency of ammonium were investigated. The results showed that when flow rate through column was 1.2mL/min, resin layer height was 33cm and zeolite combined with resin twice through column, concentration of hydrogen ion was 1.40mol/L and exchange efficiency of ammonium was 96%. With the vacuum degree of 0.07MPa and evaporating temperature of 80℃, 47% of hydroiodic acid was successfully prepared via vacuum distillation and all indexes met the requirements of industry standard of HG 3-952-76.

关 键 词：氢碘酸 粗碘 离子交换 动态法 

分 类 号：O647.3[理学—物理化学]